We have done Jboss AS 5.1 clustering, two nodes are configured and launched in clustered mode and they are up and running fine. We have also configuring Apache mod_jk load balancer, we are able to send the request to load balancer and same request is forwarded to cluster node.

I have below query :

1) How to configure Apache mod_jk load balancer in Active-Active mode? i.e load balancer should be able to distributing the load(request) to both nodes, currently all request are going always to one clustered node.

2) Is it possible to add new nodes dynamically into cluster without impacting existing cluster nodes?